Toon bruin (4)
'toon bruin' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yogi that I've seen before include "philosophy student" , "someone with ascetic behaviour" , "Master of a Hindu philosophical system" , "-- Bear, cartoon character" , "Cartoon bear; Hindu ascetic" .)
(Other definitions for yogi bear that I've seen before include "animated character" , "Cartoon character" , "comic character" , "Jellystone resident" .)